Container for alkaline substances



G. W. HOWLETT.

CONTAINER.FOR ALKALINE SUBSTANCES. APPLICATION FILED JULY I0, I919.

1,355,976. Patented Ot. 19,1920.

[NI/ENTER ZW ZZ 46 cellulose acetate the solvent prefera UNITED STATES ply-Em; OFFICE.

smarts w. nownncr'r, or source, OHIO, assrenon re THE aasnancn mouromns comm, or TOLEDO, OHIO, acoaromnon or 01110.

GONTMNER FOB ALKALINE SUBSTANCES.

1 'o all whom it may concern:

Be it known that I, GRAYLE W. Howmrrr,

a citizen of the United States, and a resident of Toled in the county of Lucas and 5 State of Ohio have invented a certain new and useful (lontainer for Alkaline Substances; and I do herebydeclare the following to be a full, clear, and exact description of the invention such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to'fiber containers or packages, and has particularly for its object the provision of a pa er container, coated with a solution of Sue as to render it impervious to the action of a character alkalis, whereby it is especially adapted for the packing or containing of soft soaps and other pastes and compounds carrying an excess of alkalinity and enables them to be poured hot into the container. The coat ing is also impervlousof acids.

A container embodying the invention and containing an alkaline paste is illustrated in the accompanying drawing with a part thereof in central vertical section.

The container 1 is preferably composed of paper or pa or board of a stiffness adapting it to 'stan up as is customary in containers of this character and may e of any shape or style, being shown in the present instance as cylindrical inform and having a removable cap-like cover 2.

The container 1s coated with a solution produced by dissolving a cellulose ester in any of its solvents, and it'is preferableto employ a cellulose nitrate as theester and to use as a solvent therefor light acetone oil, ethyl methyl ketone, or amyl ace- 40 tate either alone or mixedwith a suitable proportion of nonsolvent, such as benzene, benzin or denatured alcohol. The nonsolvent is added to lower the cost of the solution. If the cellulose ester emplo ed is a lily used is chloroform, tetrachloroethane, or ethyl acetate and alcohol. These solutions may be used either alone or mixedv with gums, oils, or resins, and may be applied in any suitable manner to either the inside, outside or both surfaces of the container to be coated, after which the coated container is dried at such temperature and for such time as is necessary to remove the last traces of the solvent therefrom, leaving the container Specification of Letters Patent. Patented Oct, 19, 1920. l Application -filed duly ID, 1819. Berlal No. 809,955.

with a tough, clear, film-like coating uniformly spread over the surface thereof and free from cracks and imperfections.

In practice I preferably use a cellulose nitrate suitably prepared in the proportion of approximately eight ounces of cellulose nitrate to one gallon of solvent ('ontainin Y substantially equal parts by volume of etby is then dried at say from ei ht to one hun- (lred degrees centigrade untll t e last traces ofvthe solvent are expelled, when the container is read for use.

If it is desired to use cellulose acetate in the solution, the coating mixture is made by dissolving approximately twelve ounces of the acetate, so prepared as to be soluble, in approximately one gallon of a mixture of alcohol and ethyl acetate in substantially ing as above described.

. Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,- i

1. A container consisting of a paper receptacle interiorly coated with a cellulose ester solution of a character to resist the action of moist alkalis, said receptacle having an alkaline paste compound therein in contactwith its coated surface. g

2. A container consisting of a paper receptacle coated with a solution of cellulose ester dissolved in any of its solvents, which solution is of a character-to resist the action of moist alkalis, said container having a moist alkaline compound therein in contact with the coated wall of the container. 4

3. A container consisting of a fiber receptacle coated with a solution of cellulose ester dissolved in any of its solvents and mixed 'witha nonsolvent, which solution is of a character to resist the action of moist alkalis, said container having therein a moist alkaline compound in contact with its coated wall. 4

4. A container consisting of a fiber recepequal proportions and applying and treattacle coatedwith a solution of cellulose ester dissolved in any of its solvents and mixed l'enderithe coating when dried less brittle,

whereby the coated surface of the container is rendered impervious to the. action moist alkalis, said container having a moist alkaline compound therein in" contact with the wall of the container. a 5. A container cons sting of a paper receptacle coated with a solution consisting of a cellulose nitrate and a solvent therefor .to c render the container impervious to the action of moist alkalis, said container having an alkaline paste compound therein in contact with the coated walls thereof.

- 6. A container consisting of a paper re ceptacle coated with a solution consisting of a cellulose nitrate anda solvent therefor mixed with a nonsolvent to render the icontainer impervious to the action of moist alkalis, said container having a moist alkaline compound therein in contact with its coated wall.

"7. A container consisting of a fiber recepta'cle coated with a solution consisting of a cellulose nitrate and a solvent therefor containing ethyl methyl 'ketone mixed with a nonsolvent to. render the container imperv'ious "to the action of moist alkalis, said container having a moist alkaline com ound therein in contact with its coated wa Is.

8. A container consisting of a fiber re a solution consisting ceptacle coated with of a cellulose nitrate solvent therefor and a material added thereto to render the coating I Iless brittle when dried, whereby the con- GRAYLE W. I HOWLETT. 

